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US4257429A Expired / Lapsed US ⏱️ 0.0 years remaining

Stylet retainer and extension

Assignee: Medtronic Inc
•
Filing: 1979-02-07
•
Granted: 1981-03-24
•
Expires: 1999-02-07
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Abstract

Abstract A medical electrode placement system including a stylet insertable within an electrode carrying lead to provide stability to the lead during electrode placement within the body. The stylet includes a knob secured to one end thereof and a lead engagement device mechanically connected to the knob for imparting movement to a lead in accordance with manipulation of the knob. In a preferred embodiment, the lead engagement device is spaced from the knob to accommodate differences in length from lead to lead and may take the form of a clamp. The lead engagement device may be formed of a body member having a lead accepting groove therein, the groove being configured to compress a lead of desired cross section when placed within the groove. Finger(s) may be provided to project into the lead accepting groove to further enhance the engagement of the lead. In some instances, x-rays may be employed to provide a view of the lead placement. In such instances, the knob may be provided with an extension to remove the hand of the physician from the x-ray or fluoroscopy field.

Inventors

  • 👤 Eugene A. Dickhudt
  • 👤 Duane J. Zytkovicz

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-24 13:26
CPC Classifications
A; A61; A61N; A61N1/00; A61N1/02; A61N1/04; A61N1/05; A61N1/056

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 80 words
In a medical electrode placement system of the type wherein a stylet is inserted within a flexible body portion of an electrode carrying lead to provide stability to the flexible lead body portion during electrode placement, the improvement which comprises knob means secured to one end of said stylet and lead engagement means mechanically connected to said knob means for engaging said flexible lead body portion to impart movement to the lead in accordance with manipulation of said knob means.
Claim 2
Dependent Claim 80 words
In a medical electrode placement system of the type wherein a stylet is inserted within a flexible body portion of an electrode carrying lead to provide stability to the flexible lead body portion during electrode placement, the improvement which comprises knob means secured to one end of said stylet and lead engagement means mechanically connected to said knob means for engaging said flexible lead body portion to impart movement to the lead in accordance with manipulation of said knob means.
Claim 3
Dependent Claim 26 words
The system of claim 1 wherein said lead engagement means is spaced from said knob means generally along said stylet to accommodate different lead body lengths.
Claim 4
Dependent Claim 14 words
The system of claim 1 further comprising means for providing a knob means extension.
Claim 5
Dependent Claim 19 words
The system of claim 3 wherein said knob means extension means comprises rod means extending from said knob means.
Claim 6
Dependent Claim 13 words
The system of claim 1 wherein said lead engagement means comprises clamp means.
Claim 7
Dependent Claim 22 words
The system of claim 1 wherein said lead engagement means comprises a body member having groove means for accepting a lead therein.
Claim 8
Dependent Claim 21 words
The system of claim 6 wherein said lead accepting groove means comprises means for compressing a lead of desired cross section.
Claim 9
Dependent Claim 22 words
The system of claim 7 wherein said lead compressing means further comprises finger means groove projecting into said lead accepting groove means.
Claim 10
Dependent Claim 14 words
The system of claim 8 further comprising means for providing a knob means extension.
Claim 11
Dependent Claim 19 words
The system of claim 9 wherein said knob means extension means comprises rod means extending from said knob means.

References Cited (Backward Citations)

US3503385A Cited
US3416533A Cited
US3757768A Cited
US4046151A Cited
US4103690A Cited
US4146036A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1984-03-23 1984-09-22 1985-03-24 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1988-03-23 1988-09-22 1989-03-24 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1992-03-23 1992-09-22 1993-03-24 $7700.00 Window Closed / Lapsed

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